Submitted a request through the contact us -> Email -> page on the Hawaiian Airlines website.
Took about 2 days for respond. After I submit Hawaiian Airlines with a picture of my Alaska Airline gold 75K card with the expiration date. I Received a match to gold Platinum through 2/18/2018.
Thank you for your interest in joining our Hawaiian Airlines Pualani Elite program.
Kindly send a copy of your Alaska Airlines elite membership card along with the expiration date valid until 12/31/2017 or 02/28/2018 for us to validate and process your Other Airlines status match request.